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I have a view model (an ObservableCollection list) set as ItemsSource for a ListBox. When I refresh this view model (get new data from network), should I set ItemsSource again, or just let it notify the ListBox ?
Which solution gains the most performance ?
P/S: Answer targeting Windows Phone 7 is prefered.
If you have your ListBox`s ItemSource set to an ObservableCollection there is nothing you need to do. Just add/remove items to/from the ObservableCollection.